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Why does the C++ STL not provide any “tree” containers?
...ccess characteristics
For this we have
std::map (and std::multimap)
std::set (and std::multiset)
Basically the characteristics of these two containers is such that they practically have to be implemented using trees (though this is not actually a requirement).
See also this question:
C tree Imp...
使用 XML 和 Web 服务 · App Inventor 2 中文网
... a button (GetWeatherButton) is pressed. When the result is returned, we set the text of the label SFTemp to the temperature.
The main work is done by the procedure extractTemperature. It processes the response from the Web service to extract the Temperature. The Web service response is a co...
Wrap long lines in Python [duplicate]
How do I wrap long lines in Python without sacrificing indentation?
6 Answers
6
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Swift - which types to use? NSString or String
With the introduction of Swift I've been trying to get my head round the new language
9 Answers
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How do I force Postgres to use a particular index?
...e the documentation for tracking down query performance issues. Don't just set enable_ params and walk away.
Unless you have a very good reason for using the index, Postgres may be making the correct choice. Why?
For small tables, it's faster to do sequential scans.
Postgres doesn't use indexes w...
Convert an image (selected by path) to base64 string
...aved through this process will have its quality horribly degraded. So this setup is definitely not ideal; it's much better to just read the original bytes, as KansaiRobot's answer shows.
– Nyerguds
Jul 24 '19 at 13:58
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Find the last element of an array while using a foreach loop in PHP
I am writing a SQL query creator using some parameters. In Java, it's very easy to detect the last element of an array from inside the for loop by just checking the current array position with the array length.
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How are multi-dimensional arrays formatted in memory?
In C, I know I can dynamically allocate a two-dimensional array on the heap using the following code:
6 Answers
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Signing a Windows EXE file
I have an EXE file that I should like to sign so that Windows will not warn the end user about an application from an "unknown publisher". I am not a Windows developer. The application in question is a screensaver generated from an application that generates screensaver applications. As such I hav...
Use of exit() function
I want to know how and when can I use the exit() function like the program in my book:
13 Answers
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